Jiri Lochman / Stromatolites accretions of sedimentary grains formed by microbial mats, Hamelin Pool, Shark Bay UNESCO Natural World Heritage Site, Western Australia, Australia.
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Jiri Lochman / Stromatolites accretions of sedimentary grains formed by microbial mats, Hamelin Pool, Shark Bay UNESCO Natural World Heritage Site, Western Australia, Australia.
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Jiri Lochman / Stromatolites, accretions of sedimentary grains formed by microbial mats, Hamelin Pool, Shark Bay UNESCO Natural World Heritage Site, Western Australia, Australia.
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Jiri Lochman / Stromatolites, accretions of sedimentary grains formed by microbial mats,, Hamelin Pool, Shark Bay UNESCO Natural World Heritage Site, Western Australia, Australia.
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Jiri Lochman / Stromatolites, accretions of sedimentary grains formed by microbial mats, Hamelin Pool, Shark Bay UNESCO Natural World Heritage Site, Western Australia, Australia.
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Jiri Lochman / Stromatolites, accretions of sedimentary grains formed by microbial mats, Hamelin Pool, Shark Bay UNESCO Natural World Heritage Site, Western Australia, Australia.
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Jiri Lochman / Stromatolites, accretions of sedimentary grains formed by microbial mats, Hamelin Pool, Shark Bay UNESCO Natural World Heritage Site, Western Australia, Australia.
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Nick Upton / 'Cave gold' microbial mats growing on stalactites in Krizna cave, near Cerknica, Slovenia
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Nick Upton / 'Cave gold' microbial mats growing on stalactites in Krizna cave, near Cerknica, Slovenia
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Jeff Vanuga / Aerial view of the Grand Prismatic Spring in Midway Geyser Basin, Yellowstone National Park, Wyoming, USA
